and use some dialectric grease on the plug connection
Dialectric grease is NON-conductive so it must be used right. The wires must have a very solid attachment or the grease can get between the wires and block the current flow. It works great to keep moisture out of the connector but can be counterproductive if it gets IN the connector.
If you want to pack the connector full of grease, there are conductive greases to use instead.
βIn a time of deceit telling the truth is a revolutionary act.β β George Orwell
It's not over when you lose. It's over when you quit.